Happy gift cards seem to be perpetually on sale somewhere. Staples.com is currently offering three of the Happy brands at a 20% discount. The Deal Buy select Happy gift cards with a 20% discount: $50 Happy Dining $50 Happy Kids $25 Happy Bites Key Terms Expires December 22, 2018. Limit 10 of each card. Quick Thoughts 20% off Happy gift cards is a good discount, especially seeing as there’s a limit of 10 per card...